Metric Buna O-Rings

OneMonroe’s Metric Buna O-Rings are engineered to provide reliable sealing performance across a variety of industrial and commercial applications. Made from high-quality Buna-N (Nitrile) rubber, these O-rings are known for their excellent resistance to oils, fuels, and other petroleum-based products, making them ideal for use in environments where durable, leak-proof seals are essential. Buna-N’s resilient properties allow it to maintain its integrity even in challenging temperatures, ranging from -40°F to 250°F, ensuring these O-rings can withstand both low and high-stress conditions with ease. With a broad range of metric sizes available, OneMonroe ensures you’ll find the right fit for your exact specifications.

Our Metric Buna O-Rings are crafted to offer outstanding resistance to abrasion and tearing, providing long-lasting performance in rigorous applications. This makes them well-suited for automotive, aerospace, marine, and hydraulic systems, as well as in general maintenance and repair settings. The unique chemical composition of Buna-N allows these O-rings to endure pressure and friction over extended periods without compromising their sealing capabilities, making them a reliable choice for static and dynamic sealing tasks. Each O-ring is manufactured to precise industry standards, ensuring a dependable fit and function in every installation.

With OneMonroe, you’re getting more than just a product; you’re receiving a commitment to quality and expertise. Our team is dedicated to supporting your projects with high-quality metric Buna O-Rings that meet both industry standards and specific customer requirements. We provide technical support to help you select the best O-ring for your application, offering detailed product specifications and guidance. Trust OneMonroe to deliver durable, efficient, and cost-effective sealing solutions tailored to meet the demands of your unique projects.

For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.

Item #	IntegrationID	Type	Material	Cross Reference	Cross Section Width	Durometer	Inside Diameter	Product Guides
450 X 7 B-90	N/A 124886	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 450.00 mm	N/A Seal Guides
457.2 X 7 B-70	N/A 124887	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 457.20 mm	N/A Seal Guides
457.2 X 7 B-90	N/A 124888	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 457.20 mm	N/A Seal Guides
462x7.00B70	N/A 124889	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 462.00 mm	N/A Seal Guides
462 X 7 B-90	N/A 124890	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 462.00 mm	N/A Seal Guides
475x7.00B70	N/A 124891	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 475.00 mm	N/A Seal Guides
475 X 7 B-90	N/A 124892	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 475.00 mm	N/A Seal Guides
487 X 7 B-70	N/A 124893	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 487.00 mm	N/A Seal Guides
487 X 7 B-90	N/A 124894	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 487.00 mm	N/A Seal Guides
490 X 7 B-70	N/A 124895	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 490.00 mm	N/A Seal Guides
490 X 7 B-90	N/A 124896	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 490.00 mm	N/A Seal Guides
494.67 X 7 B-70	N/A 124897	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 494.67 mm	N/A Seal Guides
494.67 X 7 B-90	N/A 124898	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 494.67 mm	N/A Seal Guides
500 X 7 B-70	N/A 124899	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 500.00 mm	N/A Seal Guides
500 X 7 B-90	N/A 124900	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 500.00 mm	N/A Seal Guides
515 X 7 B-70	N/A 124901	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 515.00 mm	N/A Seal Guides
515 X 7 B-90	N/A 124902	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 515.00 mm	N/A Seal Guides
530x7.00B70	N/A 124903	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 530.00 mm	N/A Seal Guides
530 X 7 B-90	N/A 124904	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 530.00 mm	N/A Seal Guides
545x7.00B70	N/A 124905	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 545.00 mm	N/A Seal Guides
545 X 7 B-90	N/A 124906	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 545.00 mm	N/A Seal Guides
545.47 X 7 B-70	N/A 124907	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 545.47 mm	N/A Seal Guides
545.47 X 7 B-90	N/A 124908	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 545.47 mm	N/A Seal Guides
560x7.00B70	N/A 124909	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 70	N/A 560.00 mm	N/A Seal Guides
560 X 7 B-90	N/A 124910	N/A Metric Standard O-Ring	N/A Buna	N/A	N/A 7.00 mm	N/A 90	N/A 560.00 mm	N/A Seal Guides

N/A
124886

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 450.00 mm

N/A Seal Guides

457.2 X 7 B-70

N/A
124887

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 457.20 mm

N/A Seal Guides

457.2 X 7 B-90

N/A
124888

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 457.20 mm

N/A Seal Guides

462x7.00B70

N/A
124889

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 462.00 mm

N/A Seal Guides

462 X 7 B-90

N/A
124890

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 462.00 mm

N/A Seal Guides

475x7.00B70

N/A
124891

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 475.00 mm

N/A Seal Guides

475 X 7 B-90

N/A
124892

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 475.00 mm

N/A Seal Guides

487 X 7 B-70

N/A
124893

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 487.00 mm

N/A Seal Guides

487 X 7 B-90

N/A
124894

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 487.00 mm

N/A Seal Guides

490 X 7 B-70

N/A
124895

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 490.00 mm

N/A Seal Guides

490 X 7 B-90

N/A
124896

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 490.00 mm

N/A Seal Guides

494.67 X 7 B-70

N/A
124897

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 494.67 mm

N/A Seal Guides

494.67 X 7 B-90

N/A
124898

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 494.67 mm

N/A Seal Guides

500 X 7 B-70

N/A
124899

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 500.00 mm

N/A Seal Guides

500 X 7 B-90

N/A
124900

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 500.00 mm

N/A Seal Guides

515 X 7 B-70

N/A
124901

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 515.00 mm

N/A Seal Guides

515 X 7 B-90

N/A
124902

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 515.00 mm

N/A Seal Guides

530x7.00B70

N/A
124903

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 530.00 mm

N/A Seal Guides

530 X 7 B-90

N/A
124904

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 530.00 mm

N/A Seal Guides

545x7.00B70

N/A
124905

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 545.00 mm

N/A Seal Guides

545 X 7 B-90

N/A
124906

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 545.00 mm

N/A Seal Guides

545.47 X 7 B-70

N/A
124907

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 545.47 mm

N/A Seal Guides

545.47 X 7 B-90

N/A
124908

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 545.47 mm

N/A Seal Guides

560x7.00B70

N/A
124909

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 70

N/A 560.00 mm

N/A Seal Guides

560 X 7 B-90

N/A
124910

N/A Metric Standard O-Ring

N/A Buna

N/A

N/A 7.00 mm

N/A 90

N/A 560.00 mm

N/A Seal Guides